Process of making patent-leather or artificial patent-leather.



. UNITED ST S PATENT.

GEORGES a. DE MONTLORD, or Bosrom AssAoriUsE'rrs, ASSIGNOR TO THE HYDLEATHER MFG 00.,OENEW YORK, N. Y., CORPORATION OF DELAWARE.

rnocsss or nmnerarnn'r mamn on m'rmcmn femur-mama.

r No.92s,235. Specification c! iletteraratent. has an is, 1900.

I Toall it may concern:

Be it known that I, GEORGES Rf DE MONT- LORD, a citizenof the United-States,residing in Boston,in the county of Suffolk and State of Massachusetts, have invented certain new andwuseful Im rovements in Processes of Making Patenteather or Artificial Pa tent- I Leather, of which the following is a specificaprocess of makin i vegetable oil, alcohol, glycerin,

tion.

' This invention "relates to an, improved atent-leather or artificial atent-leather; t 1s artificial patent-leather aving as a basis a special weave of cotton cloth.

The invention'consists of an improvedproc'ess of making patent-leather or artificial atent-leather b dissolving nitro-cellulose\ 1n a suitable so ventunder addition of a spirits ofturpentine, and a igment or dye-stuff; coating a late either p ate glass or aluminum plate wlth a composition with from three to five coatings as may be required, according to 5 cotton cloth or vpatent-leather or .cut in size to fit the coated the thickness of either the cotton cloth or coats on the lass or plate do adhere strongly together. T e plate for glass is then dried with the cotton cloth orleather on it, and after drying the cotton cloth or leather is carefully removed with the coating and dried a ain. During the'dry' g process no smell 0 any kind is noticeab e.

W en thick, hea leather or cotton cloth is to be transformed into patent-leather or artificial patent-leather several surface coatings have to be applied to the plate or plate glass, preferably one at right angles to the other, so that a thicker coating finally adheresv on it.- The leather or cotton cloth saturated with ethyl acetate is then spread Application flledflovember 4,1807, Io.

or cottoncloth which adheres to the glass is then submitted a smooth, gllossy, patent-leat tion, 4 to 12 leather or artificial patent leather is t without injuring or over the coated plate or glass-plateso as to cover-the same and adhere thereto by submitting the plate and the leather or'cloth" to pressure, so that the solution with which the latter is impre ated, when pressed on a "the coats on .the g ass-plate cause theparts .to adhere firmly to each other and permit the subsequent removal of the surface coat from the plate or plate-glass. The leather plate or an then carefully removed wit the coating from the plate or platelass, the result being pliab e and non-crackable Thefollowing proportions have iven good results, viz: 100 parts of ethy acetate, aluminum salts, pyroxylin or a similarsoluarts of nitro-cellulose, 2 parts ofglycerin, P., 3 to 12 parts of castor oil to a (1 ing process,

er or artificial patent-leather. p I

or any other vegetable oil, 10 to .80parts of pure alcohol from (grain, 1to4 parts of spirits of tur ntine, an the pigment or dyestuff which is thoroughly incorporated in the solution. The proportions, however, have to be varied somewhat accordingto the thickness a; of the hides and skins-that are to be treated for making patent-leather,';also for making artificial patent leather when lighter or" heavier cotton cloths are used.

a The advantage of my improvedsolution of eth l ac etate in which the leather or cotton clot is immersed forms with the several coatings placed onthe glasssolid homogeneou's'body which a heres to the leather or cotton cloth in such a manner that not only it is not, possible to produce cracks,

so that the immersed cotton clot In the case of artificial patenttogether .with the coating on the plate cannot be separated from the coatin without in'uringthe meshes and fibers of t e fabric. he maximum proportion of vegetable oil for each coatin on the plate or glass is one per cent.

g for 'the1510 for thefirst coating, four per cent.

second coating, eight per cent. for the third atenti at the the, foundation "is cotton late one but the coating cannot 'be removed 1' tearing the skin orcotlass-plate, l

different proportions according to the skins or hides treated, I have obtained patent leather that did not break, crack or become brittle, and said new article of manufacture was obtained on sheepskin, colt, cowhide,

V steerhide, bullhide, madras, goat, and kid,

treated by me with the above process and solutions. The cotton cloth treated likewise has given brilliant and non-crackable patent-finish artificial leather.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent:

The process herein described of making patent-leather or imitation patent-leather,- which consists in preparing a solution of ni-' tro-cellulose, a solvent, a vegetable oil, alco= hol, glycerin, spirits of turpentine, and a suitable pigment or dyestufl', immersing the leather or fabric into ethyl acetate, coating the surface of a glass-plate with one or more layers of the same solution, uniting the leather or fabric with the coatings on the glass-plate by pressure, then drying the leather or fabric While on the glass-plate, and finally removing the coated leather or fabric from the glass-plate.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

GEORGES 3. DE MONTLQRD.

Witnesses:

L. F. MURPHY, M. B. MAHONEY. 

